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Finding the Fourth Proportional to 18,918.01, 26,106.60 and 10,534.51

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Solution

The fourth proportional to 18,918.01, 26,106.60 and 10,534.51 is: 14,537.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,918.01 : 26,106.60 = 10,534.51 : x
  2. Step 2: Convert to fraction form
    18,918.01/26,106.60 = 10,534.51/x
  3. Step 3: Cross multiply
    18,918.01x = 26,106.60 × 10,534.51
  4. Step 4: Simplify right side
    18,918.01x = 275,020,238.77
  5. Step 5: Solve for x
    x = 275,020,238.77/18,918.01
  6. Step 6: Final answer
    x = 14,537.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.